What's the best way to sculpt or texture without a drawing pad?
I think you need to get yourself a tablet if you feel you need one. There is nothing wrong with sculpting with a mouse only as well, it will be a different experience and it will tend to take longer because you cannot control the pressure, but you can draw a couple of weaker strokes on top of each other so it's kind of similar to one stoke that is stronger in some parts. If you practice more you will get more efficient at it. It is generally easier and faster to sculpt and draw with a tablet. If you just got one and it feels terribly uncomfortable to use it, don't worry, that is natural, you need time to get used to a tablet once you start using it. The unnatural feeling should go away in a few months of using it.